12989360

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9551}}^1$

素因数の和:9581

約数の個数: 40

約数和(自身を含む): 31980096

約数和(自身を除く): 18990736

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 9551, 19102, 38204, 47755, 76408, 95510, 152816, 162367, 191020, 324734, 382040, 649468, 764080, 811835, 1298936, 1623670, 2597872, 3247340, 6494680, 12989360]

約数ペア:

[(1, 12989360), (2, 6494680), (4, 3247340), (5, 2597872), (8, 1623670), (10, 1298936), (16, 811835), (17, 764080), (20, 649468), (34, 382040), (40, 324734), (68, 191020), (80, 162367), (85, 152816), (136, 95510), (170, 76408), (272, 47755), (340, 38204), (680, 19102), (1360, 9551)]